US lawWashingtonRegulationsTitle 246 — HEALTH, DEPARTMENT OFChapter 246-272B — LARGE ON-SITE SEWAGE SYSTEM REGULATIONS246-272B-06850WAC 246-272B-06850WAC 246-272B-06850. Cesspools and seepage pitsLast amended: 2011Year: 2026Length: 18 wordsOfficial source The department shall not approve a LOSS design that includes a cesspool, a drywell, or a seepage pit.PreviousWAC 246-272B-06800NextWAC 246-272B-06900